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Hubei Zezhuang Technology Industrial Development Co., Ltd. is professionalChina Light Fastness Improving Auxiliary for Dyed Textile Manufacturers and Wholesale Light Fastness Improving Auxiliary for Dyed Textile OEM/ODM Suppliers, established in 2011 as Shanghai Zezhuang Industrial Co., Ltd., is located in Fengjing Town, Jinshan, known as the "crossroads of Wu and Yue" and often referred to as "three steps and two bridges". It is a high-tech enterprise specializing in the research, development, production, and sales of textile dyeing and finishing auxiliaries. The company's products cover the entire process of various technological chains, including textile printing and dyeing, coating, lamination, calendering, setting, washing, printing, and bronzing. The company boasts independent R&D, testing, and after-sales centers. It has established long-term cooperation mechanisms with Wuhan Textile University, Guangdong Wuyi University, Hunan University of Engineering, and other institutions.
The company employs two Ph.D. holders in chemistry, eight master's degree holders, and twenty-three bachelor's degree holders. Currently, the company has its marketing headquarters in Suzhou, Jiangsu (Suzhou Zezhuang New Material Co., Ltd.), a production base in Hangzhou, Zhejiang, and sales offices in Zhejiang, Hubei, Guangdong, Fujian, Shandong, and other places. Zhejiang Yongshuo Import and Export Co., Ltd., as the foreign trade company of Zezhuang Industry, focuses on expanding overseas markets. In 2023, the company established a new production base in Jingzhou, Hubei, and founded Hubei Zezhuang Technology Co., Ltd., covering an area of 60 acres with a total investment of 380 million yuan.
We will strengthen our industrial layout, increase R&D investment, and commit to the development and promotion of green and environmentally friendly products that are low-pollution, high-performance, multifunctional, and high-value-added. Guided by the concept of green and environmentally friendly development, we aim to achieve high-quality and sustainable development for our enterprise, and provide a safe, comfortable, and beautiful living environment for society.
Specification
| Item | Typical Value |
| Appearance | Liquid, pale to light yellow |
| Ionicity | Nonionic / weakly cationic |
| pH (1% solution) | 5.0 - 7.0 |
| Active content | 20% - 40% |
| Dosage | 20 - 60 g/L by pad-dry-cure |
| Pick-up | 60% - 80% depending on fabric |
| Drying | 100 - 120 C |
| Curing | 150 - 170 C, 1 - 3 min |
| pH stability | Stable in weakly acidic to neutral bath |
| Solubility | Easy to dilute with water |
| Compatibility | Compatible with common UV absorber and softening agents |
| Shelf life | 12 months in sealed drum |
| Storage | Store in cool, dry place, avoid direct sunlight |
| Packing | 120 kg drum, 1000 kg IBC, custom packing available |
Values are typical and vary by fiber, dye class and process. TDS and sample are available on request.
Application
- Polyester, nylon, cotton and blended fabric
- Outdoor fabric and shell fabric
- Automotive textile and technical textile
- Home textile and decorative fabric
- Pad-dry-cure finishing lines
- Continuous finishing ranges
- Programs that specify light fastness performance
- Mills that run multiple dyed textile programs
It runs on both continuous lines and batch processes. It can be combined with UV absorber and softening systems when multiple functions are required.
Advantage
- Reduces color fading from sunlight
- Keeps shade depth stable over time
- Applicable to polyester, nylon, cotton and blends
- Can be combined with UV absorber and softening agents in one bath
- Runs on continuous lines and batch processes
- Compatible with common finishing auxiliaries
- Used in outdoor, automotive and technical textile programs
- Supported by a manufacturer with long-term textile auxiliary experience and university research cooperation
- Export-ready supply and technical support for overseas buyers
For dyed textile programs that need light fastness, this product reduces color fading and keeps shade depth stable over time.
Payment & Shipping
- Payment: T/T, L/C at sight, and terms for repeat orders
- Packing: 120 kg drum, 1000 kg IBC, or custom packing
- Lead time: 7 - 15 days after order confirmation
- Shipping: sea, air and express for samples
- Sample: free sample for evaluation, freight collected
- Export support: documentation and shipping coordination for overseas buyers
- MOQ: flexible for trial orders and repeat programs
- Port: main China ports, can be arranged by buyer preference
Flexible terms can be discussed for repeat and long-term programs. If you need help with documentation or shipping arrangements, our export team can support the process.
- Q: What does light fastness improving auxiliary do?
- A: It reduces color fading from sunlight and keeps shade depth stable over time.
- Q: Which fibers are suitable?
- A: It is applicable to polyester, nylon, cotton and blended fabric.
- Q: Can it be combined with UV absorber?
- A: Yes. It is compatible with common UV absorber and softening agents in one bath.
- Q: What is the recommended dosage?
- A: Typically 20 - 60 g/L by pad-dry-cure. The exact dosage depends on fiber, dye class and target fastness.
- Q: What curing condition is recommended?
- A: Typically 150 - 170 C for 1 - 3 minutes.
- Q: Is it suitable for automotive textile?
- A: Yes. Automotive textile and outdoor fabric are common applications.
- Q: Can you share light fastness test data?
- A: Yes. TDS and test data can be provided for evaluation.
- Q: Do you support technical adjustment for our process?
- A: Yes. Technical support is available on request.
- Q: What is the MOQ and lead time?
- A: MOQ is flexible for trial orders, and lead time is typically 7 - 15 days after order confirmation.
Oct 12 , 2026 
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